Alloy



, UNITED STATES, PATENT onnron.

FOSTER MILLIKEN, OF LAWRENCE, NEW YORK, ASSIGNOR TO FOSTER MILLIKEN,

S. FULLERTON WEAVER, AND JAMES M. REPPLIER, TRUSTEES.

ALLOY.

No Drawing. Original application filed August 29, 1918, Serial No. 251,941.

filed December 11, 1918 Serial No. 266,327.

T 0 all whom it may concern:

Be it known that I, FOSTER MILLIKEN, a citizen of the United States, and a resident of Lawrence, in thecounty of Nassau and State of New York, vhave invented a new and Improved Alloy, of which the following is'a full, clear, and exact description,

this being a division of the application,

Serial No. 251,941, filed by me on August The object of the invention is to provide a new and improved alloy characterized by having a high acid resisting quality, an increased density, an exceedingly close and fine grain, great tensile strength, increased elasticity, and electrical resistance.

The alloy is formed of copper, nickel, iron and zinc under the influence of tungsten.

In carrying out the invention use is made of copper, 50 to 60 per cent. nickel, 26t0 34 per cent., iron, 4 to 8 percent; zinc, 7 to 11 per cent., and tungsten, ".25 to 5 per cent.

The metal in each case consists of one hundred ounces of the four metals and the percentage of tungsten is then added extra. A large percentage of tungsten after the latter has done the work of purifying the alloy passes off in the slag and the remaining small percentage of tungsten forms a component part of the alloy. Adding the tungsten to the previously formed alloy of oopper, nickel, iron and zinc permits of using a comparatively small amount of tungsten for the purpose of purifying the alloy.

It is understood that the addition of the tungsten has the double function of purifying the copper, nickel, iron and zinc and of adding a valuable ingredientto the alloy as follows:

Specimens of the alloy tested for three Specification of Letters Patent.

Patented Apr; 2'7, 1920.

Divided and this application months in the acid test disclosed, with the alloy formed under the influence of tungsten, a loss of .0134 per square inch, and hence it is manifest that an alloy of the character specified has high acid resisting properties. It hasalso been found that an alloy pro; duced under the influence of tungsten has increased density and the grain is closer and finer and resistance to corrosion is increased.

It is expressly understood that the deoxidizing agent removes any oxidized portions that may have formed on any one of the metals forming the alloy and hence no cavities, fissures, recesses or the like and incident to oxidation are formed in the alloy. The alloy is thus compacted and its elastic limit and tensile strength are considerably increased relative to any alloy formed of.

the same metals without the influence of the deoxidizing agent. It is well known that -when a metal is deoxidized and is'free of cavities and the like its electrical resistance is increased and this is expressly the case in the present alloy. The addition of tungsten increases the resistance of the alloyto high temperatures.

, Having thus described my invention, 1-

claim as new and desire to secure-by Letters Patent An alloy, consisting of the following ingredients in approximately the proportions stated, copper50 to 60 per cent., nickel 26 to v 34per cent., iron 4 to 8 per cent., zinc 7 'to 11 percent., the said copper, nickel, iron and zinc being in a deoxidized state, and tungsten.

I .-F OSTER MILLIKEN. 

